This market refers on the tennis match between Robin Montgomery and Mayar Sherif in the Oeiras 3, scheduled for April 13 at 5:00AM ET. This market will resolve to 'Robin Montgomery' if Robin Montgomery advances against Mayar Sherif. This market will resolve to 'Mayar Sherif' if Mayar Sherif advances against Robin Montgomery. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.